单项选择题

According to some scientists, the computer will do much harm to people's health as smoking and drugs do（）.

A．does much harm ... smoking
B．will do as much harm ... cigarettes
C．will be doing as much harm ... smoking
D．does as much harm ... cigarettes

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单项选择题

Which of the following would be a likely theme for the next paragraph（）

A．Naturally changing ecological conditions.
B．Animals that have become extinct.
C．Achievements of the government Endangered Species Program.
D．Programs that have destroyed natural habitats.

单项选择题

Which of the following has become extinct due to man's destruction（）

A．African elephant.
B．Irish elk.
C．Giant panda.
D．White Bengal.